Pulleys 1 and 2 are of equal diameter. Pulley 1 rotates about fixed axis A and, through flexible link 6, rotates pulley 2 about fixed axis B. Link 3 turns about axis A and is connected by turning pair D to pulley 4. Flexible link 7 runs over pulleys 4 and 5 and is connected by turning pair C to flexible link 6. When pulley 1 rotates about axis A, pulleys 4 and 5 rotate about axes D and A, imparting oscillating motion to link 3 about axis A.
$2096$FL,Sa$